MCP4252T-503E/MF

Digital Potentiometers Overview

The MCP4252T-503E/MF is a dual-channel digital potentiometer IC from Microchip Technology, featuring volatile memory and an SPI serial interface. It provides two independent rheostat configurations with 8-bit resolution, offering 256 discrete taps. The device supports a nominal resistance (R_AB) of 50 kΩ with a ±20% tolerance. It operates within a supply voltage range of 1.8V to 5.5V and includes high-voltage tolerant digital inputs capable of withstanding up to 12.5V. The component is housed in a 10-lead DFN package.

Digital Potentiometers Feature Summary

• Dual resistor network with 8-bit resolution (256 steps) and 50 kΩ nominal resistance
• SPI serial interface supporting 10 MHz operation at V_DD ≥ 2.7V
• High-voltage tolerant digital inputs (up to 12.5V) for split-rail applications
• Low wiper resistance (75 Ω typical) and low temperature coefficient (50 ppm/°C typical)

Digital Potentiometers Applications

• Programmable gain amplifiers
• Voltage reference trimming
• Digital potentiometer replacement for mechanical pots

Digital Potentiometers Procurement Notes

Verify the 'T' suffix indicates tape-and-reel packaging and the 'MF' suffix denotes the specific DFN-10 package variant. Confirm that the volatile memory type requires power retention for wiper settings. Ensure the ordering code matches the exact resistance value and channel count required for the design.

Digital Potentiometers Selection Notes

Select this part for designs requiring dual independent variable resistors controlled via SPI. The volatile memory means wiper positions are lost on power cycle; use non-volatile variants if state retention is needed. Verify that the 1.8V minimum operating voltage aligns with the system's logic levels, as the SPI interface may have different frequency limits below 2.7V.

Digital Potentiometers Part Context

This component belongs to the MCP41XX/MCP42XX family of 7/8-bit SPI digital potentiometers. The MCP4252 specifically denotes the dual-channel, 8-bit, volatile memory variant. It shares the same pinout and control logic with other members of the series, differing primarily in resolution, memory type, and channel count.

Digital Potentiometers Replacement Considerations

Direct replacements include other MCP425X variants with compatible packages. Check for differences in memory volatility (RAM vs. EEPROM) and resolution (7-bit vs. 8-bit). Ensure the replacement maintains the 50 kΩ resistance value and DFN-10 footprint.